The container that holds the water for the football team is 12 full. after pouring in 7 gallons of water, it is 34 full. how many gallons can the container hold?

it was 1/2 full  add 7 gallons it is 3/4 full

so 7 gallons = 1/4 of the container ( 3/4-1/2 = 1/4)

so 7 x 4 = 28

container can hold 28 gallons.

secant-secant formula:

(whole secant) x (external part) =           (whole secant) x (external part)

(8+y-2) *8=                                           (y+4+6) *6

(y+6)*8 = (y+10) *6

distribute

8y+48 = 6y +60

subtract 6y from each side

2y +48 = 60

subtract 48 from each side

2y = 12

divide by 2

y = 6

sv =     (y+4+6)

sv   = 6+4+6

sv = 16